HUDDERSFIELD, England -- An employee at a pie maker in northern England died in an explosion early Friday that injured six others, one of them seriously.

The blast at Andrew Jones Pies in Huddersfield gutted the brick building, the Huddersfield Daily Examiner reported. Investigators said that the explosion appeared to be caused by natural gas and there was no evidence of foul play.

The building was to be sealed through the weekend, police said. The company Web site, describing Andrew Jones in North Yorkshire as a prize-winning maker of pies and pasties, said that the factory and stores would be closed until further notice.

The dead man was described as a 38-year-old Halifax resident. The most seriously injured worker, a 23-year-old from Crosland Moor, was transferred to Leeds General Infirmary.

The other five employees in the building at the time of the explosion suffered minor injuries, the Daily Examiner said.